A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5920-01-633-0890
NSN 5990-01-281-7601
NSN 5930-01-122-6104
NSN 5965-01-198-3256
NSN 5835-00-187-1481
NSN 5996-00-862-5514
NSN 6320-01-558-2141
NSN 5999-01-514-2365
NSN 6130-00-915-3299
NSN 5990-01-032-5160
NSN 5855-00-925-0114
NSN 5835-00-013-9271